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Category:   Application (Security)  >   XScreenSaver Vendors:   Zawinski, Jamie
XScreenSaver LDAP Authentication Error Lets Physically Local Users Bypass the Password Feature
SecurityTracker Alert ID:  1017996
SecurityTracker URL:  http://securitytracker.com/id/1017996
CVE Reference:   CVE-2007-1859   (Links to External Site)
Date:  May 2 2007
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 5.02
Description:   A vulnerability was reported in XScreenSaver. A physically local user can bypass the password authentication feature.

When the target system uses a remote LDAP directory service for authentication and the LDAP service is unavailable for a long period of time, a physically local user can unlock the screen using an arbitrary password.

The vulnerability is due to a flaw in the way XScreenSaver parses a getpwuid(getuid()) function call.

Alex Yamauchi reported this vulnerability.

Impact:   A physically local user can bypass the screen saver password feature.
Solution:   The vendor has issued a fixed version (5.02).
Vendor URL:  www.jwz.org/xscreensaver/ (Links to External Site)
Cause:   Authentication error
Underlying OS:   Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 2 2007 (Red Hat Issues Fix) XScreenSaver LDAP Authentication Error Lets Physically Local Users Bypass the Password Feature   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 2.1, 3, and 4.
Apr 17 2014 (Oracle Issues Fix for Solaris) XScreenSaver LDAP Authentication Error Lets Physically Local Users Bypass the Password Feature
Oracle has issued a fix for Solaris 10.



 Source Message Contents

Date:  Wed, 2 May 2007 13:43:30 -0400
Subject:  CVE-2007-1859 xscreensaver authentication bypass


https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=237003

CVE-2007-1859
 
 


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